Question

Why the food chain has only few trophic levels?​

Answer 1

Answer:

at each trophoc level, pnly 10 percent energy from the previous one gets transferred. the other gets lost as heat and other entropies. since the loss of energy is so high, food chains contain not more than four trophic levels.

thanks for the question.

Answer 2

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In an ecosystem, the number of trophic levels is limited as they cannot be more than 3 to 4 trophic levels. This is because the "amount of energy flow" decreases with the successive trophic level. Then, the trophic level of an organism is the number of steps it is from the start of the chain.